We have Windows 7 x64 bits Ultimate systems.
We were using Trend Micro Titanium AntiVirus for about half year.
Then, we install Windows 7 x64 bits Service Pack 1.
Well, everything went bad quickly. We had problems displaying double-byte Asian character fonts in file names.
Then, Disk Defragmenter will not start.
We remove the troublesome Antivirus programs. However, Disk Defragmenter still does not start. If you click it in System Tools, the hard drive will make lots of noise for around a minute. Then, nothing happens. We check, the file
Done a disk scan using sfc. OK. c:\windows\system32\dfrgui.exe is still there.